:root {
            --primary-color: #072C28;
            --primary-dark: #072C28;
            --primary-light: #546E6B;
            --background-gradient: linear-gradient(135deg, #072C28 0%, #546E6B 100%);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .login-container {
            background: white;
            border-radius: 15px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            overflow: hidden;
            width: 100%;
            max-width: 400px;
            position: relative;
        }

        .login-header {
            background: var(--background-gradient);
            color: white;
            padding: 30px;
            text-align: center;
            position: relative;
        }

        .login-header::before {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 0;
            border-left: 15px solid transparent;
            border-right: 15px solid transparent;
            border-top: 10px solid var(--primary-color);
        }

        .logo-container {
            margin-bottom: 15px;
        }

        .logo-container img {
            max-width: 180px;
            height: auto;
        }

        .login-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 0;
            opacity: 0.95;
        }

        .login-body {
            padding: 40px 30px 30px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            font-weight: 500;
            color: #333;
            margin-bottom: 8px;
            display: block;
        }

        .form-control {
            border: 2px solid #e9ecef;
            border-radius: 10px;
            padding: 12px 15px;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            background-color: #f8f9fa;
        }

        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(20, 61, 24, 0.15);
            background-color: white;
        }

        .input-group {
            position: relative;
        }

        .input-group .form-control {
            padding-right: 45px;
        }

        .input-group .btn-toggle-password {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #6c757d;
            cursor: pointer;
            z-index: 10;
            transition: color 0.3s ease;
        }

        .input-group .btn-toggle-password:hover {
            color: var(--primary-color);
        }

        .btn-primary {
            background: var(--background-gradient);
            border: none;
            border-radius: 10px;
            padding: 12px;
            font-size: 1rem;
            font-weight: 600;
            width: 100%;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s ease;
        }

        .btn-primary:hover::before {
            left: 100%;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(20, 61, 24, 0.3);
        }

        .btn-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .btn-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .text-center {
            text-align: center;
        }

        .mt-3 {
            margin-top: 1rem;
        }

        .mt-4 {
            margin-top: 1.5rem;
        }

        .mb-3 {
            margin-bottom: 1rem;
        }

        .mb-4 {
            margin-bottom: 1.5rem;
        }

        /* Alertas customizados */
        .custom-alert {
            border: none;
            border-radius: 8px;
            padding: 12px 15px;
            margin-bottom: 20px;
            display: none;
            position: relative;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            animation: slideDown 0.3s ease-out;
        }

        .custom-alert.show {
            display: block;
        }

        .custom-alert-success {
            background-color: #d4edda;
            border-left: 4px solid #28a745;
            color: #155724;
        }

        .custom-alert-error {
            background-color: #f8d7da;
            border-left: 4px solid #dc3545;
            color: #721c24;
        }

        .custom-alert-info {
            background-color: #d1ecf1;
            border-left: 4px solid #17a2b8;
            color: #0c5460;
        }

        .custom-alert i {
            margin-right: 8px;
        }

        .custom-alert .btn-close {
            position: absolute;
            top: 8px;
            right: 10px;
            background: none;
            border: none;
            font-size: 18px;
            cursor: pointer;
            color: inherit;
            opacity: 0.7;
            padding: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .custom-alert .btn-close:hover {
            opacity: 1;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeOut {
            from {
                opacity: 1;
                transform: translateY(0);
            }
            to {
                opacity: 0;
                transform: translateY(-10px);
            }
        }

        .custom-alert.fade-out {
            animation: fadeOut 0.3s ease-out forwards;
        }

        /* Código de verificação */
        .code-input {
            display: flex;
            justify-content: space-between;
            gap: 8px;
            margin: 20px 0;
        }

        .code-input input {
            width: 45px;
            height: 50px;
            text-align: center;
            font-size: 1.2rem;
            font-weight: bold;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            background-color: #f8f9fa;
            transition: all 0.3s ease;
        }

        .code-input input:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.25rem rgba(20, 61, 24, 0.15);
            background-color: white;
        }

        /* Seções ocultas */
        .section {
            display: none;
        }

        .section.active {
            display: block;
        }

        .back-button {
            background: none;
            border: none;
            color: var(--primary-color);
            font-size: 0.9rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 5px;
            margin-bottom: 20px;
            transition: color 0.3s ease;
        }

        .back-button:hover {
            color: var(--primary-dark);
        }

        .loading-spinner {
            display: none;
            margin-left: 10px;
        }

        .loading-spinner.show {
            display: inline-block;
        }

        /* Responsividade */
        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            .login-container {
                max-width: 100%;
                margin: 0;
            }

            .login-header {
                padding: 25px 20px;
            }

            .login-body {
                padding: 30px 20px 25px;
            }

            .logo-container img {
                max-width: 150px;
            }

            .login-title {
                font-size: 1.1rem;
            }

            .form-control {
                padding: 10px 12px;
            }

            .btn-primary {
                padding: 10px;
            }

            .code-input input {
                width: 40px;
                height: 45px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 480px) {
            .login-header {
                padding: 20px 15px;
            }

            .login-body {
                padding: 25px 15px 20px;
            }

            .logo-container img {
                max-width: 130px;
            }

            .code-input input {
                width: 35px;
                height: 40px;
                font-size: 1rem;
            }

            .code-input {
                gap: 6px;
            }
        }